黄大维;罗仲睿;罗文俊;徐长节;石海斌;张丽;

• 1:华东交通大学铁路环境振动与噪声教育部工程研究中心
• 2:华东交通大学轨道交通基础设施性能监测与保障国家重点实验室
• 3:天津铁道职业技术学院铁道工程学院

摘要(Abstract)：

现有的盾构隧道施工同步注浆材料流动性通常利用稠度仪进行测试，人为操作水平对试验结果影响很大，试验结果的随机性也很大，且试锥沉入深度与浆液在注浆管内的流动阻力并无直接关系。为此，研制了1套同步注浆材料流动性测试装置，利用该装置可直接测得浆液在注浆管内的压力损失；提出以注浆材料在注浆管中单位长度的压力损失作为注浆材料流动性评价指标，并以注浆材料中骨料颗粒的表面积与浆体的体积之比（简称“表体比”）作为分析注浆材料流动性的影响参数，推导出表体比计算式；采用研发的流动性测试装置对现场所用同步注浆材料及室内配制不同表体比的注浆材料试样进行流动性测试及对比分析。结果表明：研制的同步注浆材料流动性测试装置可行；注浆材料表体比为其流动性的主要影响参数；注浆材料在注浆管内单位长度的压力损失随着初始压力的增加呈近似线性增长；注浆材料中骨料（粒径大于0.075 mm的固体颗粒）含量越多即表体比越大，其在注浆管内单位长度的压力损失也越大。

关键词(KeyWords)： 盾构隧道;同步注浆;注浆材料;压力损失;表体比

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目（52078213,U1934208,51725802）;; 江西省杰出青年科学基金资助项目（20192ACBL21003）;; 江西省技术创新引导类计划项目（20203AEI008）

作者(Authors): 黄大维;罗仲睿;罗文俊;徐长节;石海斌;张丽;

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